Machine for bilging sheet-metal cylinders



. C. H. RIEGEL MACHINE yFOR BILGING SHEET METAL CYLINDERS CLARENCE H .RXEQEL Stumm,-

H RIEGEL adem,

4 Sheets-Sheet 2 A CLARE-.NCS

C. H. RIEGEL MAGHINE FOR BILGING SHEET METAL CYLINDERS Filed Aug. 8, 1921 Jan, 27, 1925.

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MAGHINE FOR BILGING SHEET METAL CYLINDERS Filed Aug. 8, 1921 4 Shee'tS-Sheet 3 'Wazaa' @ww/wim CLARENCE' H RlaG E.;

Jan. 27, 1925.

C. H. RIEGEL MACHINE FOR B'ILGING SHEET METAL CYLINDERS Filed Aug. 8, 1921 4 Sheets-Sheet 4' me/nm CLARENCE I." lI! lilllldnlllll Yin lllllhlll IILIIUYIII l Il!!! .WIEGEL Patented Jan. 27, 1925.

UNITED STATES CLARENCE H. einem., or Nuns, omo.

MACHINE non BILGING snninfrsivrnrn. CYLINDERS.

Application led August 8, 1921, Sera] No. 490,532.

To all whom t may concern.'

Be it known that I, CLAnnNon H. RIEGEL, a citizen of the United States, residing at 434i Robbins Ave., Niles, in the county of Trumbull, State of Ohio, have invented certain new and useful Improvements in a Machine for Bilging Sheet-Metal Cylinders, of which the following is a specification.

This invention pertains to a machine4 for bilging steel cylinders, and the machine comprises a set of segmental dies and associated means adapted to expand the dies radially with a `slower movement and increased force during the final stages of bilging when the maximum of 'material i's involved than in the interim when only a portion of the material is being stretched. Briefly stated, my general object is to provide a simple organization of parts adapted to bilge either heavy lor light gauge sheet metal cylinders quickly without rupturing the metal and so that the bilged product may be used as al steel barrel capable of withstanding hard usage when filled and in shipment.

In the accompanying drawings, Fig. 1 is a vertical section centrally through the inachine show-ing'the dies collapsed and al'plain straight cylinder sleeved thereover. Fig. 2 is a side elevation of the machine with the dies collapsed. Fig. 3 is a plan view of the machine showing the dies eXpand1ed,`and Fig. -le is a vertical section on line h4 of Fig. 3, showing an expanded or bilged l cylinder upon the dies. Fig. 5 is an enlarged section transversely of the machine on line 5 5 of F ig. el. Figs. 6 to 9, inclusive, are diagrammatic views, Fig. 6 showing a plan viewA of the dies collapsed within a round cylinder before it is stretched or expanded, and Fig. 7 showing a side view of the dies collapsed in full lines and partly expanded in dotted lines, While Figs. 8 and 9 delineate the finishing stages of bilging.

The machine comprises a bed plate 2 having a pair of spaced uprights 3*-3 Within which a shaft et having a crank or eccentric 4 has rotatable bearing. A large gear 5 at one end of shaft l is adapted to mesh with a pinion 6 on a counter shaft 7 which is driven by a large gear 8 from any suitable source of power. A round plate 9 having channels 10 radially in its flat top side is bolted upon the upper ends of uprights 3, and a central hub portion 11 depending from plate 9 has a bushing 12 within which a round crank rod 14 is adapted to slide vertically. The` lower end of crank rod 14 is pivotally connected to an eccentric strap 15 which surrounds -the crank or eccentric portion of shaft 4, and the upper portion of rod 14 is reduced in diameter and carries an elongated sleeve 18 adjustably connected to the upper screw-threaded end thereof by a flanged nut 19. Screws 2() unite nut 19 and sleeve 18 together, and a lock nut 21 is also screwed to 'the upper end of rod 14 and united to nut 19 by screws 22. The reciprocalV movements of thrust rod. l'ft are thereby imparted to sleeve 18 which is flat sided and supports a plural number of longitudinal bars 23 at each flatside and in a circle, see Fig. 5. Each bar 23 is recessed and provided with perforated ears at intervals lengthwise thereof to permit a series of tog gle links 24: to be pivotally pinned or connected thereto, and the outer ends of these links arepivotally connected to a series of vertical Adie-'supporting members 25 having hor-izontally-extending foot portions 26 adapted to rest and slide upon plate 9. Guiding ribs 27 on the bottom side of tions 2G seat within radial `channels 10, and a separate die 28 is detachably mounted upon the outer flat face of each die supporting member 25, and all said dies are curved transversely and longitudinally. The radius `of curvature of each die is equal tothe maximum curvature to be given to the bilged product to be produced, and the upper and lower ends of each die are also preferably straightfor a short distance of the die to produce a straight portion at each end of the bilged cylinder which will facilitate the assembly of the heads and the forming of a chime oint in making a barrel.

A flat ring 30 opposite the upper ends of the die-supporting members and dies from Ibeing lifted or raised apart from plate 27, said ring being rigidly connected to the top plate by a series of tie rods 31 which extend downwardly in each vertical space between the radially-disposed toggle links, see Figs. 4- and 5. Die supporting members 25 are preferably ribbed on their outside face and the dies channeled to receive said ribs, see Fig. 5, and a shim plate 32 is placed upon foot 26 of each die supporting member 25 to support the cylinder C when it is first sleeved over the collapsed dies.

In operating the machine the dies are first collapsed and drawn inwardly to their limit foot por-" longitudinally llt) ing of the dies eccentric 4 is in a dead center position and one-half of a turn shifts sleeve 18 the maximum distance to etl'ect a complete bilging operation. However, the spreading move-ment of the dies at the beginning and end is relatively much slower than in the interim due to the gradually lessening travel of the crank rod as the eccentric or crank center approaches the dead center line o-n the last arc of the circle in changing the rotary motion to a reciprocatory one. In this final movement of the parts all of the material is under stretch and the links are also approaching a dead center and straightening on the last are of the circle of their turning movements, thereby imparting the maximum force and power to the dies at a time when most needed. Thus, the eccentric and the links co-act to slow down the spreading movement of the dies and impart thel greatest ,power dur-ing their final are movements Vwhich permits the meta-l to stretch and flow without rupture Valthough the operation is comparatively rapid and quickly accomplished. Then as shaft 4 continues to turn and completes the last half of its cycle or turning movement the dies are collapsed by the uplift imparted to rod 14 and sleeve 18, and the bilged product can be removed or the operation repeated.

lVhat I claim is:

1. A machine for expanding sheet-metal cylinders, vcomprising an eccentric, a rod connected to said eccentric constrained to move in a straight line, a. sleeve adjustably. mounted upon said rod, shdable supportmg members pivotally linked to said sleeve, and segmental bilging dies atlixed to said supporting members.

2. A machine for bilging sheet-metal c vlinders, comprising an eccentric shaft and a reciprocable rod connected therewith, a channeled plate and die supporting members slidably mounted thereon, dies mounted upon said members, a sleeve upon said rod having link connections with said members, and mea-ns engaged with said rod adapted to adjustably fix said sleeve thereon.

3. A machine for expanding the wall of a sheet-metal cylinder, comprising a set of radially-arranged segmental dies, movable supporting members lfor said dies, a radially grooved base plate for said members, means engaging one end oi said members adapted to hold said members slidably upon said plate, a reciprocable shaft and a longitudinally-adjustable device thereon having a series of links pivotally connected with said members, and means connected with said shaft adapted to reciprocate the same with a gradually slackening movement at the end of the stroke of the shaft.

4. A machine for bilging sheet-metal cylinders, comprising segmental bilging dies, a reciprocable member having a sleeve longitudinally adjustable thereon, links con necting said dies and sleeve adapted to be moved to a straight position at right angles to the axis of said member, and crank mechanism adapted to reciprocate said member arranged to move to a dead center position concurrently with a straightening movement of said links.

5. A machine for expanding sheet-metal cylinders, comprising a. set of radially-movable expanding dies, a die operating device constrained to move in a straight line having links connected with said dies adapted to be turned to right angles relatively to said straight line, and an ecceni' trie adapted to reciprocate said device and arranged to come to a dead center position coineidently with the straightening position of the links in expanding the dies.

6. A machine for expanding sheet-metal cylinders, comprising radially expanding dies, slidable supports for said dies, a reciprocable member having links pivotally connected with said supports and adapted to be turned at right angles thereto, and an operating eccentric connected with said member adapted to rotate to a dead center position as the said links approach a right angular position to the axis ol' said member.

CLARENCE ll. RIMMEL.

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